Let us calmly consider the present situation. The mystery of the official protection afforded to spies has been greatly increased during the month of March, and the public confidence has been further shaken in consequence of the statement of Mr Bonar Law in the House of Commons, who not only declared that there were, on March 1st, 600 male alien enemies still residing on or near the coast, but also made a most interesting revelation. The Admiralty, he said, in order to test whether signalling was really going on from the shore, sent a trawler to sea with instructions to show German signal-lights. And these were instantly answered! What was done? Nothing! And, judging from the experience of the public, this is hardly surprising. Perhaps a case in point may be of interest. In the middle of February, from an officer in His Majesty's Service, I received information that certain highly suspicious signals were being made nightly between the Kent coast and London. Therefore I went forth at once to investigate, in company with the officer in question, who is a qualified signaller and wireless expert, and a non-commissioned officer also qualified in signalling, while I myself know something of signalling and wireless. For a fortnight we were out nearly every night in a motor-car--sometimes watching from the tops of hills, a cold and weary vigil from dark to dawn--until we had established, beyond all shadow of doubt, the houses whence the mysterious lights emanated. These houses--several of them being residences of well-to-do people, and all in high commanding positions, had, in each case, an alien living in them, whose name and calling I succeeded in obtaining. Then, one night, while posted on a hill commanding nearly the whole of Surrey, and having taken down their code-messages on many occasions, we resolved to make a test, and with a powerful signalling-apparatus, I suddenly replied to one of the signals, repeated part of the code-message, and in pretence of not understanding the remainder, asked for its repetition. At once it was flashed to me and read by all three of us! In the message, which, later on, was submitted to an expert in ciphers, occurred the numeral five. It was more than a coincidence, I think, that only an hour before that message had been flashed, five German aeroplanes had left the Belgian coast on their way to England! On three separate occasions, from various high positions in Kent and Surrey, we flashed German signals, which were at once responded to. Then, having fully established that messages were being nightly so exchanged, to and from the metropolis, always with the same three code-letters as prefix, and having definitely fixed those houses harbouring the spies, I considered it my duty, as an Englishman serving his country, to call in the assistance of the Intelligence Department of the War Office, and to them I furnished a full report, together with the signals sent and received.